16516820976 has 20 divisors (see below), whose sum is σ = 42668454312. Its totient is φ = 5505606976.

The previous prime is 16516820963. The next prime is 16516821017. The reversal of 16516820976 is 67902861561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172050171 + ... + 172050266.

Almost surely, 2^16516820976 is an apocalyptic number.

16516820976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16516820976 is an abundant number, since it is smaller than the sum of its proper divisors (26151633336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16516820976 is a wasteful number, since it uses less digits than its factorization.

16516820976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344100448 (or 344100442 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 16516820976 in words is "sixteen billion, five hundred sixteen million, eight hundred twenty thousand, nine hundred seventy-six".